Quiz for Capacitors-

Q1: What is the unit of capacitance?

A. Ohm B. Henry C. Farad D. Tesla

Q2: What happens to the capacitance when the area of plates increases?

A. Capacitance decreases B. Capacitance increases C. No change D. Becomes zero

Q3: Inserting a dielectric between the plates of a capacitor...

A. Decreases the capacitance B. Increases the capacitance C. Has no effect D. Short circuits it

Q4: What is the formula for capacitance of parallel plate capacitor?

A. C = ε₀A/d B. C = d/ε₀A C. C = A/ε₀d D. C = ε₀d/A

Q5: What is stored in a capacitor?

A. Charge only B. Current C. Voltage D. Electrical energy

Q6: What is the energy stored in a capacitor?

A. ½CV² B. CV² C. C/V D. V/C

Q7: Capacitors in series have...

A. More capacitance B. Less capacitance C. Equal capacitance D. Infinite capacitance

Q8: Capacitors in parallel have...

A. More capacitance B. Less capacitance C. Same as smallest one D. Zero capacitance

Q9: A capacitor blocks...

A. AC B. DC C. Both AC and DC D. None

Q10: Which factor does not affect capacitance?

A. Area of plates B. Distance between plates C. Dielectric material D. Shape of battery

Q11: When a capacitor is fully charged...

A. Current stops B. Voltage becomes zero C. Capacitance becomes infinite D. Plates touch

Q12: Dielectric constant of vacuum is...

A. 0 B. 1 C. 10 D. 100

Q13: Capacitor discharges when...

A. Switch is closed B. Battery is removed C. Switch is open D. Circuit breaks

Q14: Time constant in RC circuit is...

A. R + C B. RC C. R/C D. C/R

Q15: Which combination gives highest capacitance?

A. Series B. Parallel C. Both same D. Cannot determine

Q16: Which of these is a correct unit for capacitance?

A. Volt/Ohm B. Coulomb/Volt C. Watt/Second D. Ampere/Volt

Q17: A capacitor is said to be ideal if it...

A. Has no leakage B. Stores infinite charge C. Has zero resistance D. Is large in size

Q18: Which dielectric material has highest dielectric constant?

A. Air B. Water C. Vacuum D. Glass

Q19: Voltage across a capacitor in steady state DC...

A. Is zero B. Increases linearly C. Is constant D. Fluctuates

Q20: Capacitors store...

A. Magnetic energy B. Electrical energy C. Mechanical energy D. Nuclear energy

Q21: Which formula gives charge on capacitor?

A. Q = CV B. Q = V/C C. Q = C/V D. Q = V²/C